package cn.tedu.sp06.controller;

import cn.tedu.sp01.pojo.Item;
import cn.tedu.sp01.pojo.Order;
import cn.tedu.sp01.pojo.User;
import cn.tedu.sp01.util.JsonResult;
import com.netflix.discovery.converters.Auto;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import java.util.List;

/**
 * @author 张琪
 * @date 2020/12/21
 * @describe
 */
@RestController
@Slf4j
public class RibbonController {

    @Autowired
    private RestTemplate restTemplate;

    /*
        注册中心注册表,
        item-service ---- localhost:8001, localhost:8002


     */

    @GetMapping("/item-service/{orderId}")
    @HystrixCommand(fallbackMethod = "getItemsFB")
    public JsonResult<List<Item>> getItems(@PathVariable String orderId){
//        调用远程的商品服务, 获得订单的商品列表
//        {1} - RestTemplate自己定义的一种占位符格式
        return restTemplate.getForObject("http://item-service/{1}",
                JsonResult.class,
                orderId);           // 用orderId()填充占位符
    }


    @PostMapping("/item-service/decreaseNumber")
    @HystrixCommand(fallbackMethod = "decreaseNumberFB")
    public JsonResult<?> decreaseNumber(@RequestBody List<Item> items){
        return restTemplate.postForObject("http://item-service/decreaseNumber",
                items, JsonResult.class);
    }

    @GetMapping("/user-service/{userId}")
    @HystrixCommand(fallbackMethod = "getUserFB")
    public JsonResult<User> getUser(@PathVariable Integer userId) {
        return restTemplate.getForObject("http://user-service/{1}", JsonResult.class, userId);
    }


    @GetMapping("/user-service/{userId}/score")
    @HystrixCommand(fallbackMethod = "addScoreFB")
    public JsonResult<?> addScore(@PathVariable Integer userId, @RequestParam Integer score) {
        return restTemplate.getForObject("http://user-service/{1}/score?score={2}",
                JsonResult.class,
                userId, score);
    }

    @GetMapping("/order-service/{orderId}")
    @HystrixCommand(fallbackMethod = "getOrderFB")
    public JsonResult<Order> getOrder(@PathVariable String orderId) {
        return restTemplate.getForObject("http://order-service/{1}", JsonResult.class, orderId);
    }

    @GetMapping("/order-service")
    @HystrixCommand(fallbackMethod = "addOrderFB")
    public JsonResult<?> addOrder(){
        return restTemplate.getForObject("http://order-service/", JsonResult.class);
    }


    public JsonResult<List<Item>> getItemsFB(String orderId){
        return JsonResult.err().msg("获取订单中的商品列表失败");
    }
    public JsonResult<?> decreaseNumberFB(List<Item> items){
        return JsonResult.err().msg("减少商品的库存失败");
    }

    public JsonResult<User> getUserFB(Integer userId) {
        return JsonResult.err().msg("获取用户失败");
    }

    public JsonResult<?> addScoreFB(Integer userId, Integer score) {
        return JsonResult.err().msg("增加用户积分失败");
    }

    public JsonResult<Order> getOrderFB(@PathVariable String orderId) {
        return JsonResult.err().msg("后去订单失败");
    }

    public JsonResult<?> addOrderFB(){
        return JsonResult.err().msg("添加订单失败");
    }

}
